Composite Membrane Containing a Proton Conductive Oxide for Direct Methanol Fuel Cell
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The composite membrane for direct methanol fuel cell (DMFC) was developed using H3O+-β"-Al2O3 powder and perfluorosulfonylfluroride copolymer (Nafion) resin. The perfluorosulfonylfluroride copolymer (Nafion) resin was mixed with H3O+-β"-Al2O3 powder and it was made to sheet form by hot pressing. The electrodes were prepared with 60 wt% PtRu/C and 60 wt% Pt/C catalysts for anode and cathode, respectively. The morphology and the chemical composition of the composite membrane have been investigated by using SEM and EDXA, respectively. The composite membrane and H3O+-β"-Al2O3 were analyzed by using FT-IR and XRD. The methanol permeability of the composite membranes was also measured by gas chromatography (GC). The performance of the MEA containing the composite membrane (2 wt% H3O+-β"-Al2O3) was higher than that of normal pure Nafion membrane at high operating temperature (e.g. 110oC), due to the homogenous distribution of H3O+-β"-Al2O3, which decreased the methanol permeability through the membrane and enhanced the water contents in the composite membrane
Abstract
The composite membrane for direct methanol fuel cell (DMFC) was developed using H3O+-β"-Al2O3 powder and perfluorosulfonylfluroride copolymer (Nafion) resin. The perfluorosulfonylfluroride copolymer (Nafion) resin was mixed with H3O+-β"-Al2O3 powder and it was made to sheet form by hot pressing. The electrodes were prepared with 60 wt% PtRu/C and 60 wt% Pt/C catalysts for anode and cathode, respectively. The morphology and the chemical composition of the composite membrane have been investigated by using SEM and EDXA, respectively. The composite membrane and H3O+-β"-Al2O3 were analyzed by using FT-IR and XRD. The methanol permeability of the composite membranes was also measured by gas chromatography (GC). The performance of the MEA containing the composite membrane (2 wt% H3O+-β"-Al2O3) was higher than that of normal pure Nafion membrane at high operating temperature (e.g. 110oC), due to the homogenous distribution of H3O+-β"-Al2O3, which decreased the methanol permeability through the membrane and enhanced the water contents in the composite membrane
참고문헌 (13)
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